<pre name="code" class="java"><span style="font-size:24px;">private int mIndex; public HomeItem(Context context, AttributeSet attrs) { super(context, attrs); // TODO Auto-generated constructor stub mContext = cont…
 在写自己定义的view时,有时会报下面错误: Caused by: java.lang.NoSuchMethodException: <init> [class android.content.Context, interface android.util.AttributeSet] watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvbGVlaHUxOTg3/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/…
1. 异常描述 FATAL EXCEPTION: main Process: com.whereru.greengrass.goforit, PID: 13847 java.lang.RuntimeException: Unable to start activity ComponentInfo{com.whereru.greengrass.goforit/com.whereru.greengrass.goforit.activity.MainActivity}: android.view.In…
错误的原因是我的Student实体,成员变量数据类型,使用了int基本数据类型,改成Integer包装类型即可.…
global.gradle版本配置文件 原配置 compile_sdk_version = 26 build_tools_version = '26.0.2' target_sdk_version = 25 support_version = '26.1.0' 改为 compile_sdk_version = 27 build_tools_version = '27.0.2' target_sdk_version = 27 support_version = '27.0.2' 是因为build_…
 直接上干货:  报错归纳1: DEBUG [main] - Logging initialized using 'class org.apache.ibatis.logging.slf4j.Slf4jImpl' adapter. 原因:xml里面不能有java方不存在的类,它是会去找的,找不到就报错,所以,万一删掉java类了,xml里面的相对应映射的字段也要注释掉.遇到两次了!浪费不少时间! 2.MyBatis     他要加空构造   实例化对象 原因:MyBitis ,他实体类pojo …
Caused by: org.apache.ibatis.builder.BuilderException: Error invoking SqlProvider method (tk.mybatis.mapper.provider.SpecialProvider.dynamicSQL). Cause: java.lang.InstantiationException: tk.mybatis.mapper.provider.SpecialProvider at org.apache.ibatis…
严重: Servlet.service() for servlet [springmvc] in context with path [/SpringMvc-1] threw exception [Request processing failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [cn.wth.base.Bean…
执行mapreduce报错java.lang.Exception: java.lang.RuntimeException: java.lang.NoSuchMethodException: com.web.visit.main.ClickVist$VisitMapper.<init>(), 原因是map类和reduce没有加static修饰,因为hadoop在调用map和reduce类时采用的反射调用,内部类不是静态的,没有获取到内部类的实例 解决方法 1.在内部类加上static修饰 2.将…
2019-08-06 12:42:03.153 ERROR 10080 --- [nio-8080-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.mybatis.sp…